Wire cuter, stripper, and scraper.



E. l. ROHNE.

wma cumn, sTmPPER, AND scmna. APPLICATION FILED 0CT 13. 1911.

Patented Nov. 5, 1918 mmm JV 'of WAM/ nl: mamas mans m nmmunm. muumnmn. :L n

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EVEN J. ROI-INE, 0F MINNEAPOLIS, MINNESOTA. p

WIRE CUTTER, STRIPPER, AND SCRAPER.

Specification of Letters Patent.

Patented Nov.. 5, 119118..

Application filed October 13, 1917. Serial 1\To. 196,379.

To all whom it may concern. a

Be it known that l, EVEN J. RoHNn, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful lfmprovements in Wire Cutters, Strippers, and Scrapers; and I do hereby declare the following to be a full, clear, v

andA exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an extremely simple and highly eliicient wire cutter, stripper and scraper; and, to this end, it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

. In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings,

Figure 1 is a view principally in longitudinal central section showing the improved tool held in the hand 0f an operator, and positioned as used in stripping the insulation from a wire; l Fig. 2 is a view partly in elevation and partly yin section taken on the line 2-2 of Fig. 1; a

Fig. 3 is a view corresponding to Fig. 2, with the exception that the parts are moved into a position to open the jaws for application around a wire or removal therefrom; and

Fig. 4; is a transverse section taken on the line lc- 1 of Fig. 2, on an enlarged scale.

The numerals 5 and 6 indicate a pair of crossed levers that are intermediately connected by a pivot bolt 7 to afford, at. one of their ends, a pair of cooperating jaws 8.

f To the other end of the lever 5, is rigidly secured a shaft 9, which projects parallel to the axis of the pivot bolt 7. The other end of the lever 6 is considerably longer than the respective end of the lever 5 and has rigidly secured thereto a cam pin 10, which projects parallel to the shaft 9 and 1n the same direction therewith. lwo pairs of cooperating Vshaped notches 11 and 12 are formed in the jaws 8 and have cutting edges.

Journaled on the shaft 9, is an outer or .i tubular shaft 13, one end of which bears against the lever 5 and its other end is engaged by a washer 1-1, which holds the shafts The mounted on a screw 15, which 1s secured in thefree end of the shaft 9. .Integral with the end of the shaft 13, adjacent to the lever 5, is a radial arm 16 having a cam slot 17 into which the cam pin 10 projects.

Mounted on the outer shaft 13, is a transversely divided or two-part hand piece 18, the section ofwhich, at the free end of said shaft, is relatively short and rigidly secured for rotation therewith. The other or long section of the hand piece 18 is frictionally mounted on the shaft 13, but will turn thereon when considerable pressure is applied thereto.

The approaching movement of the jaws 8 is regulated by a setscrew 19 mounted in a laterally projecting lug 20, integral with the lever 6 and arranged to be engaged by the lever 5. This setscrew 19 is so posi` tioned, that the cutting edges of the notches l1, which are relatively small, will pass each other for the purpose of cutting a wire. This same setscrevv 19 will prevent the cutting edges of the notches 12 from completely passing each other, so that they will only cut through the insulation on the wire. Obviously, by adjusting the setscrew 19, the improved tool may be used in connection with wires of different diameters.

To facilitate the stripping of the insulation from heavy wires, I provide a knife 22 for longitudinally splitting the insulation in advance of the movement of the jaws 5 and 6 on the bare wire. This knife 22 has a laterally projecting body portion, which bears upon the inner face of the jaw of the lever 6 and is detachably secured thereto by a binding screw 23. This binding screw 23 has screw-threaded engagement with the body portion of the knife 22 and extends through a slot 24 in the jaw of the lever 6, which permits the blade of said knife to be adjusted toward and from the notches 12.

9 and 13 against axial separation. washer 14 is After the insulation is removed from a portion of a wire, the bare wire may to remove any foreign matter by a 25 formed on the lever 6. v

The operation of the above described tool may be briefly described as follows The cooperating notches 11 are provided for severing the wire and the cooperating notches 12 are provided for cutting the inbe scraped knife edge sulation on the wire and stripping the cut the hand piece,

Fig. Y1.

while the lever 5 is in contact with anobstruction, such as the operators thumb on his left hand. Such turning-movement of due toits frictional contact with the Outer shaft 13, will turn said shaft and open the lever 6 through the cam connections 10 and l1G. After the jaws Shave been applied -around the wire Z, the same may be closed thereon, while 'said wire is in either-'pair of notches lland 12 by turning the hand piece toward the operator, 'while the lever 5 engages the wire as a base of resistance.

"lVithithe jaws 8 closed on thewire Z, the same may be cut, provided said wire is in the notches 11, or, if it is in the'notches 12, only the insulation thereon will be cut by the rotation of the levers 5 and 6 around the axis of the'hand piece. movement 0f the toOl, the long section of the hand-piece remains stationary in the operators hand, while the short section thereof turns in his hand, under the rotation of the shaft V13 in said handI piece.

By removing the washer 14 and screw 15, the shaft 9 may be withdrawn from the shaft 13 and, at the same time, the cam j pin 10 will be Withdrawn from the slot 17. Vith the shaft 9 separated from the shaft '13, the levers may be moved to open up the jaws, s0 that the cutting edges of the notches 11 and V12 may be easily sharpened.

1. A 'tool of the kind described comprising a pair of pivotally'connected levers provided with j'aws having coperating notches with cutting edges, and means for operating the levers to open and close their jaws includin-g a hand piece offset from the pivotal connection between said levers and extending substantially parallel to the projected axis thereof.

2. A tool of the kind described comprising a lpair 'of pivotally connected levers having cooperating jaws, a hand piece secured to one of said levers with freedom for -fric- '55 tionally resisted turning movement with respect thereto, and a cam operating connection between said levers, whereby thejaws may be opened and closed by the movement of the hand piece.

` A tool of the kind described comprisa pair of pivotally connected levers having coperating jaws, av two part hand piece secured to oneof said levers with one section thereof having -frictionally resisted turning movement 1n respect thereto and a 8 around the .wire Z, l Athe same may be readily opened by turning the hand piece away from the operator,

During this A connection, including a cam, between said levers, whereby the jaws may be opened and closed by the movement of the hand piece.

et. A tool of the kind described comprising a 'pair of intermediately pivotcd levers having a pair of jaws, an inner shaft, a tubular outer shaft journaled on the inner shaft, saiC` inner shaft being rigidly secured to one of the levers, a cam connection between the tubular shaft and the other of said levers, and a hand piece mounted on the outer shaft.

A tool of the kind described comprising a pair of intermediately pivotcd levers having at their outer ends a pair of jaws,

an innershaft, a tubular Outer shaft journaled on the inner shaft, said inner shaft being'rigidly secured to one 0f the levers, a cam connection between the tubular shaft andthe other of said levers, and a hand piece'mounted on the outer shaft for operating the same and having frictionally rcsisted turning movement thereon.

(3. A tool ofthe kind described comprising a `pair of intermediately pivotcd levers having` a pair of jaws, an inner shaft, a tubular outer shaft journaled on the inner shaft, said inner shaft being rigidly secured to one of the levers, a caln connection between the tubular shaft and the other of said levers, and a two-part hand piece mounted on the outer shaft for operating the same, one member of the hand piece having frictionally kresisted turning movement onthe outer shaft.

7. A tool of the kind described comprising a pair of intermediately pivotcd levers having a pair of jaws, an inner shaft, a tubular outer shaft journaled on the inner shaft, said inner shaft being rigidly secured 'tubular outer shaft journaled on the inner shaft, said inner shaft being rigidly secured to one of the levers, a separable cam connection between the tubular shaft and the other of said levers, said two shafts and the members of the cam connection adapted to be separated by an axial movement of one of the shafts with respect to the other, and a hand piece mounted on the outer shaft.

v9. A tool of the kind described comprising a pair of pivotally connected levers, provided with aws having` coperating notches with cutting edges, for transversely cutting the insulation on a wire, and a knife on one of the jaws arranged to longitudinally split the insulation in advance of a lateral inovement of the jaws to simultaneously strip said insulation from the wire.

l0. A tool of the kind described comprising a pair of intermediately pivoted levers having a pair of jaws, an inner shaft, a tubular shaft Journaled on the inner shaft, said inner shaft being rigidly secured to one of the levers, a separable earn connection between the tubular shaft and the other of said levers, said two shafts and cam con- Uopies of this patent may be obtained for five cents neetion adapted to be separated by an axial `movement of one of said shafts in respect to the other, whereby the jaws may be opened up for the purpose of grinding, and means for holding the two shafts against axial separation.

In testimony whereof I afiiX my signature in presence of two witnesses.

EVEN J. ROHNE. Witnesses:

CLARA DEMAREST, HARRY D. KILGORE.

each, by addressing the Commissioner o! Patente,

Washington, D. G." 

